<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="">
      </div>
      <!--登录表单区-->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
        <!--用户名-->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!--密码-->
        <el-form-item prop="password">
          <el-input type="password" v-model="loginForm.password" prefix-icon="iconfont icon-3702mima"></el-input>
        </el-form-item>
        <!--     按钮区域   -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: "Login",
  data() {
    return {
      // 这是登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 这是表单的验证规则对象
      loginFormRules: {
        //验证用户名是否合法
        username: [
          {required: true, message: '请输入登录名称', trigger: 'blur'},
          {min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur'}
        ],
        //验证密码是否合法
        password: [
          {required: true, message: '请输入登录密码', trigger: 'blur'},
          {min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur'}
        ]

      }
    }
  },
  methods: {
    //点击重置按钮, 重置登录表单
    resetLoginForm() {
      // console.log(this)
      this.$refs.loginFormRef.resetFields();

    }, login() {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return;
        const {data: res} = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登录失败')
        this.$message.success('登录成功')
        //1.将登录成功之后的 token，保存到客户端的 sessionStorage 中
        //1.1 项目中出了登录之外的其他AIP接口，必须在登录之后才能访问
        //1.2 token 只应用在当前网站打开期间生效,所以将token 保存到 sessionStorage 中
        window.sessionStorage.setItem('token', res.data.token)
        //2.通过编程式导航跳转到后台主页,路由地址是 /home
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;

    }
  }
}

.btns {
  display: flex;
  justify-content: flex-end;
}

.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}


</style>